Machine for operating upon boots and shoes



m 5 7 1 L A N R u 0 B D L u 0 G Im a 9. 1 3 w MACHINE FOR OPERATING UP QN BOOTS AND SHOES Original Filed Feb. 3, 1921 Patented July 3, 1928 UNITED; STATES rarsimuo rricis.

JOSEPH eounnnounn annrminmcxs, or assreno as "r I UNITED SHOE MACEINERY conronn'rron, orrm'nason, JERSEY, a conrona'rron or NEW massif,

nscirmnron ornnmme me on more awn sauna.

Original application filed February 3, 1921,: eria1 Roi 442 010, ant! Lin 'firuat l ritaln February 16, 1920. I'Dividednnd this application:filedllfeb ruary 15, A928. :smal No. 611337.

The present invention relates to machines for operating upon 'boots and shoes and more particularly to thetype ofmachine disclosed, in the patent to Bates, No. 1;140,349, of May;

This application is a division of the ap-' plication of Gouldbourn and Ricks, Serial No. 442,040, filed Feb. 3,1921. i

The above mentionedBates patent disv closes a machine for operating upon boots and shoes which is rovided with ,means for varying the spec of operation as the different parts of the boot or shoe are brought into operative position. Thespecif- 1 io form of the apparatus shown in thepatent is designed for operating upon the soles of shoes which are held upon a horn of the usual form in such a manner that the operations carried out at the toe of the sole are performed at a slowerrate than the operations upon .the straight parts of the sole, these variations inspeed being automatically effected through the rotation of the horn.

The object of the presentsinventionis to provide improvements in machines of this general nature in order to allow .the operator to vary the general speed of operation at will, While still maintaining the automatic variations in speed as the different partsof the shoe are brought into operative position. With this object in View, a feature of the invention contemplates the vprovision of meansfor operating upon a boot or shoe,vtogether with means for automatically controlling the speed ofsaid, operating means as different portions of the boot or shoe are brought into operative position,-andjn1eans under the control of the operator for-control ling the general speed of operation, at the same time allowing the automatic .speedcom trolling means to function in its usual manner. This permits theoperator conveniently to va the speed of operation for diflerent conditions of work and, allows "him to [take advantageof all opportunitiesto speed up the machine without injuring the quality of the product. i I e Other features of invention consist incortain novel features of construction, combinamachine embodying the several features of:

tions and arrangements ofpartsheneinafterdescribed and claimed, the advantages of whichwvillbeapparentto those skilled in the ant from the followin description;

. The; accompanying rawing illustrates a theinvention. a a v i The illustratedtembodiment of the inven-- tion comprises iamachine for carryin out the McKay'method of stitching the soihs of boots and; shoes to the uppers, and includes a horn of the usualtype adapted to be received within the shoe, tagether with needle, presser foot and feedi point mechanisms ito perform the necessary (stitching operations. The horn is rotatable upon the machine frame and is connected with a cam which serves *to control a variable speed gearing as "the horn is rotated into various angular positions. A clutch mechanism with a cooperating treadle is provided to connect and disconnect the machine from the source of power and also means are provided whereby continued notion of the .treadle after engagement of ithev vclutch mechanism'acts on the variable speed-mechanism to change the general speed of operation of the. machine.

Referring particularly to the drawing, the machine column 1 has mounted thereon a rotatable horn 3 of the usual form. The whirl contained within the horn is actuated throu hv earsv5 and 7 and shaft =9-from the cams a t of the "machine and the needle, feed point and presser foot mechanisms are also actuated from the cam shaft in the man ner fully described in application SerialNo. 442,040, abeve refenred to. e The presser foot assembly is indicated generally at 10 in a position opposite the upper part of thehorn. ,(Rotatable with the horn is a cam 12 which has bearin against its periphery a cam roll 14 mount upon-a .bellcrank lever 16 which is connected withv one arm of a second bell V crank .leverlS by re rody20. The bell crank lever 18 is pivoted at 19 and its other arm connects by a' rod .22 with the variable speed mechanism to be presently described lin detail. The-rod 22 is preferabrl provided with a turn buckle 24 to allow =o convenient .adjustment for .length- With thisconstruction the variablegspeed mechanismis controlled no in accordance with the variations in periphery of the cam 12 as the born 3 is rotated into various angular positions.

The desired control of the general speed of the machine by the operator is carried out through the action of a rod 26 which is adapted to rise 11 on the depression of a foot treadle (not shown). To this end, the pivot 19 of the bell crank lever 18 is not stationary but is connected with a lever 28 which is itself pivoted to the frame of the machine at 30. A spring 32 is connected between the lever 28and the upper arm of the bell crank lever 18 in order to urge the rod 20 to the left and hold the cam roll 14 in engagement with the cam 12 in all ositions. A second spring 34 is-connecte between the lever 28 and thefixed art of the machine to hold the lever norma ly against a stop 36. The clutch rod 26 passes through a projecting ear 38 of the lever'28 and is provided with a shoulder 40 which is adapted to engage the ear after the rod 26 has been lifted sufliciently to start the machine by actuation of the clutch mechanism. Upon engagementof the shoulder 40 with the ear 38 the lever 28 is'raised, thereby lifting the bell crank lever 18 bodily and also raising the control rod 22 to act on the variable speed mechanism. This actuation of the variable speed mechanism in no way interferes with the control of the mechanism through the action of the cam 12, the latter serving to vary the speed of operation, as before, as different parts of the boot or shoe are being operated upon.

The clutch mechanism and the variable speed mechanism may be of any desired form but the former is preferably of the type disclosed in thepatent to Jerram, No. 1,124,620. The upper part of the clutch rod 26 is connected to a bell crank lever 42 which is pivoted upon the machine head and which has one arm pivoted to the link by which the clutch illustrated and described in the above J erram patent is controlled. The downward movement of the rod 26 is limited by a stop screw .44 attached to the bell crank and arranged to engage a face onthe machine. The clutch is designed and arranged to be thrown into 0 eration by the upward movement. of the rod before the shoulder 40 engages the ear 38 after which continued movement of the rod 26 lifts the lever 28 to vary the speed of the machine. A casing 46 is mounted upon the rear of the machine to which casing is attached the rear face 48 of a brake disk againstwhich the front face of a clutch cone 50 of the clutch may engage to stop the machine. The main shaft 52 of the machine projects through the casing and is provided with a sleeve 53 which is confined between collars 55 at its ends. Mounted upon the sleeve 53 is a second sleeve 56 to which the hub of the driving pulley 58 is splined. A third sleeve 60 is mounted upon sleeve 53 at the left of sleeve 56 and has splined thereon the clutch member 62 of the clutch. The sleeves 56 and 60 are connected by roller clutch members '64 and are each provided with integral gears 66 and 68, respectively, the former being somewhatlarger than the latter. The gears mesh with pinions 70 and 72 which are fast 'upon a shaft 74 journaled for rotation"within a brake drum 76 which has hub portions 78 and 80 mounted on the sleeves 56 and 60. The brake drum v76 is urged-toward the clutch member 62 by s rings 82 which bear between the inner sur aces of the pulley 58 and the brake drum. The left hand collar 55 is acted upon by suitable springs '(not shown) which tend to force the sleeve 53' to the right, this tendency being opposed by a hand cam lever 84 mounted upon the shaft- When the cam lever is moved to the position indicated in dotted lines, the sleeve is caused to move toward the right and the clutch member 62 thus moves out of the range of clutch cone 50 and it then becomes impossible to start the machine by power. However, upon depression of the treadle to partially raise the rod 26 to separate theclutch member 50 from the brake member 48, the machine may be turned over b hand by means of a hand wheel 4 attac ed to the main shaft.

The brake drum coo erates with a pair of brake shoes 86 which depend from a' is parallel to the main shaft 52. The shaft 92 is connected by a suitable lever with the upper end of the rod 22 in such a manner that raisin of the rod causes application of the brake s oes to the brake drum. The contacting surfaces of the brake drum 76 and shoes 86 are bevelled so that as the shoes grasp the drum they wedge it towards the rear end of the shaft and away from the end face of the cone member of the clutch with which it is held in driving contact by the springs 82 while the drum and the cone member are rotating at the same speed.

It will be seen that when the brakedrum is allowed to freely rotate, the entire assembly including the driving ulley, the brake drum and the clutch mem er 62 will all rotate at the same velocity. However, if the brake drum is retarded 111' its motion, the rotation of the pulley 58 is transmitted to the clutch member 62 through the train of pinions and gears, the speed taken by the member '62 being dependent upon the gear ratio and upon the braking eflect applied to the drum. The maximum speed of the clutch member 62 occurs when the brake drum is stationary. l I

In order to start the machine, the opera tor depresses the treadle slightly, thus lifting the rod 26 and bringing the clutch members 50 and 62 into engagement as explained in the patent to J erram, above referred to, at the same time releasing the member 50 from the brake member 48. The machine will now operate in accordance-with variations in the periphery of the cam 12, the speed being caused to change through the rising and fallingof the rod 22 in applying varying degrees of brake pressure upon the brake drum. Furthermore, the operator may vary the general speed of operation by depressing the treadle to further raise the clutch rod 26 which also lifts the lever 28 carrying with it the bell crank lever 18 and the rod 22.

While it is preferred to employ thespecific construction and arrangements of parts shown and described, it will be understood that this construction and arran ement is not essential except so far as speci ed in the claims and may be changed ormodified without departing from the broader features of the invention.

The invention having been described, what is claimed is: r

1. A machine of the class described having, in combination, means for operating upon a boot or shoe, a work support arran ed to turn as successive portions of the wor are presented to said operating means, mechanism for varying the speedof operation of said operating means, acam arranged to turn with said work support, means operated from said cam for controlling said mechanism to vary the speed of operation of said operating means, and means under the control of the operator for controlling said mechanism to vary the speed of operation of said operating means while said mechanism remains under the control of said cam. i 1

2. A machine of the class described having, in combination, mean for operating upon a boot or shoe, mechanism for varying the speed of operation of said operating means, means for automatically controlling saidmechanism to vary the speed of operation as different portions of the boot or shoe are presented to the operating means, and means under the contro of the operator for controlling said mechanism to vary the general speed of operation while said mechanism remains under the control of said automatic controlling means.

3. A machine of the class described having, in combination, means for operating upon a boot or shoe, mechanism for varylng the speed of operation of said operating means comprisinga lever pivotally movable to vary the speed of operation and bodily movable to vary the s eed of operation, means for pivotally movlng the lever automatically to vary the speed of operation as different portions of the boot or shoe are presented to the operatin means, and means under the control of t e operator for bodily moving the lever. V

4. A machine of the'class described having, in combination, means for operating u on a boot orshoe, mechanism for varying the speed of operation of said operating means comprising a lever pivotally movable to vary the speed of operation and bodily movable to vary the speed of operation, a work support arranged to turn as successive portions of the Work are presented to said operating means, connections between the work support and lever for pivotally moving the lever to vary the speed of operation as different portions of the boot or shoe are presented to the operating means, and means under the control of the operator for bodily moving the lever.

JOSEPH GOULDBOURN.

FRED RICKS. 

